# ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

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## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

ECET 402 Week 5 Homework

ECET 402 Week 1 Homework

ECET 402 Week 1 iLab

ECET 402 Week 2 Homework

ECET 402 Week 2 iLab

ECET 402 Week 3 Homework

ECET 402 Week 3 iLab

ECET 402 Week 4 Homework

ECET 402 Week 4 iLab Relays and Relay Logic Controls

ECET 402 Week 5 iLab Stepper Motor and Measuring Speed of a DC Motor

ECET 402 Week 6 Homework

ECET 402 Week 6 iLab

ECET 402 Week 7 iLab Root Locus Plots and the Stability of a Control System

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## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

ECET 402 Week 5 Homework

ECET 402 Week 1 Homework

ECET 402 Week 1 iLab

ECET 402 Week 2 Homework

ECET 402 Week 2 iLab

ECET 402 Week 3 Homework

ECET 402 Week 3 iLab

ECET 402 Week 4 Homework

ECET 402 Week 4 iLab Relays and Relay Logic Controls

ECET 402 Week 5 iLab Stepper Motor and Measuring Speed of a DC Motor

ECET 402 Week 6 Homework

ECET 402 Week 6 iLab

ECET 402 Week 7 iLab Root Locus Plots and the Stability of a Control System

## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

**ECET 402 Week 5 Homework**

__Chapter 12:__

**1.** Draw a relay wiring diagram for a circuit that implements the simple logic diagram shown in __Figure 12.36__. The circuit should be in the style of __Figure 12.1(a)__.

**2.** Repeat Exercise 1 except draw the circuit as a ladder diagram.

**3.** A small house has three windows and two doors. Each window and door has a switch attached such that the contacts close when a door or window opens. Draw a ladder logic diagram that will turn on a light if one or more windows are open or if both doors are open.

**4.** In a processing plant, jars on a conveyer belt are cleaned out with a high-pressure air jet just prior to being filled (__Figure 12.37__). When a jar approaches the cleaning station, it activates a switch (with both NO and NC contacts). The conveyer belt stops for 10 s while the air jet is on; then the conveyer belt starts, and the jar moves along. Draw a ladder logic diagram to control this process.

## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

**ECET 402 Week 1 iLab**

1.From Part A, step 1(b) of lab instructions, change the temperature from 0 to 30° C and record the corresponding RTD resistance in Table 1.

2.Graph the temperature-resistance characteristics of RTD below:

3.Is the graph obtained in step 2 above linear (a straight line)?

4.Use the graph obtained in step 2 above to determine the resistance of RTD at 75° F.

5.What is the value of resistor R1 found in Part A, step 3(f)?

6.Paste your Multisim circuit from Part A, step 4 below:

7.Briefly describe how the circuit above works:

8. From Part A, step 6 of lab instructions, how would you modify the circuit so that the LED indicating an air-conditioning system is turned ON for temperatures of 68° F or higher?

## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

**ECET 402 Week 2 iLab**

1.After completing Part A of week 2 lab, complete the following table:

2.Briefly describe if you had any issues with this lab.

3.Briefly describe how you would display the temperature on the LCD display of a microcontroller system.

4.From Part B, step 1 of lab instructions, paste your Multisim circuit design below.

5.From Part B, step 2 of lab instructions, paste your Multisim circuit design below.

6.Enter I_{L} and V_{L} values you found in the circuit of Figure 5 of lab instructions below:

7.Enter I_{L} and V_{L} values you found in the circuit of Figure 6 of lab instructions below:

8.Describe the advantages of the voltage follower circuit in Figure 6 of the lab instructions:

## ECET 402 ECET402 ECET/402 ENTIRE COURSE HELP – DEVRY UNIVERSITY

**ECET 402 Week 3 Homework**

__Homework__

**1.** What is the difference between *static*,*sliding*, and *viscous friction*?

**2.** An aluminum casting that weighs 10 lb is resting on a steel surface.

**6.**A robot arm must be able to extend 24 in. horizontally in 2 s while carrying a load of 10 lb. How much force is required, assuming the arm is accelerating all the way?

**14.**A torque of 18 N · m is applied to a rotating part. The part has a moment of inertia of 0.078 kg · m^{2}. How much time will it take to rotate the part 180°?

**19.**An electric heater is rated at 220 Vac at 15 A. How many Btu/h of heat does it put out?

**22.**A small gasoline engine can put out 18,000 N · m/min of mechanical power. The engine is used to drive an electric generator that is 80% efficient. Find the output of the generator in watts.

**28.**What is *diametral pitch*, and why is it an important parameter in a gear mesh?

**31.**For each gear pass shown in Figure 5.49, how many degrees must the big gear turn for the small gear to make two complete revolutions?

**33.**Find the overall gear ratio of the gear train shown in Figure 5.50. If the motor is rotating at 500 rpm, what is the rotational velocity of the output gear?

**46.**What are some advantages of transmitting power by belts?